记录时间：8天

浮筒直径：200mm

水位变幅：10m

误    差：≤±1cm

用    途：用于自动记录江河、湖泊、水库涵闸及潮汐的水位变化过程，每周换纸一卷.

Running time: 8 days

Diameter of float: 200mm

Stage fluctuation: 10m

Error: ≤±1cm

Application: It is used for long term automatically records of the water level change process of the river、 lake、  reservoir and etc.